1. Arch Surg -- Colonic Propulsive Impairment in Intractable Slow-Transit Constipation, December 200...
Arch Surg -- Colonic Propulsive Impairment in Intractable Slow-Transit Constipation, December 2003, Bassotti et al. Intractable constipation, especially of the. Clinical management of intractable constipation.
http://archsurg.ama-assn.org/cgi/content/full/138/12/1302

2. Treatment of Constipation in Older Adults - December 1, 2005 -- American Family Physician -- Amer...
Functional constipation is diagnosed when no secondary causes can be identified, such as a medical condition or a medicine with a side effect profile that includes constipation. Normal transit constipation, also known as functional constipation,...
http://www.aafp.org/afp/20051201/2277.html

3. Evaluation and treatment of constipation in infants and children: recommendations of the North Am...
Evaluation and treatment of constipation in infants and children: Constipation Guideline Committee of the North American Society for Pediatric Gastroenterology. Constipation in infants and children: The management of constipation in children one...
http://www.guideline.gov/summary/summary.aspx?doc_id=9792&nbr=5245